On Thu, 2004-12-30 at 07:34, Patrick McHardy wrote:
> jamal wrote:
> Patrick,
> > Thanks for this cleanup.
> >
> > Questions/comments:
> >
> > 1)compiler or style issue?
> >
> > You have a few of fixes from
> >
> > a)
> > if (..){
> > single statement here;
> > }
> >
> > to:
> > if (..)
> > single statement here;
> >
> > I always add an extra pair of brace
> > for lazy reasons (in the back of my mind: incase i want to add another
> > statement ;->).
>
> Just cleanup, I prefer not to waste too many lines. Saving
> space increases readability.
>
I am going to try and control my fingers ;->
They have a brain of their own.
> > b)Other things which i have seen compilers whine about in the past of
> > the form:
> >
> > a missing cast
> > - a->priv = (void *) p;
> > + a->priv = p;
>
> No need to cast a pointer to void *, except if a->priv
> was of some different type.
>
So as long as lvalue was void you dont cast? p is certainly not void.
> > 4) Some of those messages are actually still useful and dont really
> > harm to leave around for a little while longer;
> > - if (tb[TCA_PEDIT_PARMS - 1] == NULL) {
> > - printk("BUG: tcf_pedit_init called with NULL params\n");
> >
> > I realize the fixes you have to return -ENOMEN/NOENT etc are an
> > improvement but a little ascii puking wont harm for somebody writting
> > a user space app until we get better netlink error propagation
> > in place.
>
> Agreed for some messages, but those should be DEBUGs. Anyway,
> I didn't want to judge for every message and possible convert
> it, so I deleted all printks that got replaced by error codes.
>
the printks are meant to help a little more (and are mostly on the slow
path); when the error propagation for netlink works well, those sorts of
ascii messages will probably be transported back to user space. On any
newer patches I suggest to just keep them.
Heres something else:
Re: [PATCH PKT_SCHED 15/17]: Remove checks for impossible conditions in
pedit action, you say:
>Remove checks for impossible conditions in pedit action.
________________________________________________________________________
[..]
- if (p == NULL) {
> - printk("BUG: tcf_pedit_dump called with NULL params\n");
> - goto rtattr_failure;
> - }
> -
You have these type changes all over. These are certainly artifacts of the
development time, I may have have caught a bug or two via these checks at
the time. It is highly likely those bugs are fixed in the code merged.
If they happen, however, they are a BUG and the possibility of a bug is
still there ;-> i.e the word "impossible" is too strong a description.
Having said that:
Is it better to have an oops catch this or have something print on the
console or syslog indicating a bug? This is more a philosphical question
and an answer could be "good practise is to let oops catch it". I am
actually indifferent if those checks go - however if i had caught them
myself i would have put unlikely() around them.
> > I will look closely at one or two of those fixes in the morning;
> > majority look good on first quick scan (most things were needed during
> > development or are artifacts of that period and are safe to rid of now).
>
> Thanks, I'll continue later today and send another batch
> tonight.
I will wait for you to finish before i start working on the eactions.
So a general comment to all the patches. All look good - I would prefer
a check against size instead of EOPNOTSUPP for the two i pointed at.
And going forward, prefer you leave the printks i had for errors but fix
the return codes to be more meaningful. So only those two i pointed at
with EOPNOTSUPP i am not ACKing (my basic tests will break) - rest Dave
can push in.
Again, thanks.
cheers,
jamal
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